Clutch.



A. E. NEVWON.

CLUTCH.

Ammonium MLRH um. 11. 1911,

UNITED STATES PATENT FFIE.

ALBERT E. NEWTON, 0F WORCESTER, MASSACHUSETTS. ASSIGNOR, BY MESNE ASSIGNZ MENTS, T0 REED-PRENTICE GIYIPANY, QI" WORCESTER, MASSACHUSETTS, A.

CORPORATION 0F MASSACHUSETTS.

CLUTCH.

Application filed January 11, 1911, Serial No` 602,005.

Patented June 2, 1911i.. Division of Patents Nos. 895,102, 895,104, and.

895,105, granted August 4, 1908, and application Serial No. 441.933, filed .Taty 6, 1908.

To all whom it may Concern Be it known that l, ALBERT E. Nnw'roN, a citizen of the United States, 'residing at llorcester, in the county of 1llloreester and State of llfltasaaohusetls, have invented a new and useful Clutch, of which the following is a specification.

This invention relates to a elnteh whieh while capable et general use has heen found to he particularly useful when applied to hack gearing, especially of upright and radial drills and drill presses.

This is a division oi." my three patents on power transmitting mechanism; gearing, and driving gearing for upright drills, Nos. 895,102, 895,104-, and 895,105, respectively, granted August 4, 1908, and of my application for patent on gearing tiled July i908, Serial No. 441,033.

The principal objects of the invention are to provide an innnoved friction clutch, and arrangement :tor operating the clutch, whereby eflieient operation may he Secured with a simple construction; to provide a construction ot great strength which will oc. oupy a relatively small space; to secure great ease of manipulation; to provide l'or taking up the we; and for easily opta-ating,T the Same; to provide operating,- lingers hav` infbll a powerful leverage; to provide a eonstrnetion in which the expansion is internal and has a great area equal to the entire width Vot the face; to provide a sensitive element which when engaged an not slip and which can have no half-Way engagement but must he either operatively engi-aged or entirely disengaged; to provide a eou-V struetion with twol operating` lingers havingr the expanding force equally divided between them; and to provide a eonstruetirm in which there shall he a power-Ful ratio oit power to work leverage oi the line-ers heeause of the incline ot' the end of the huh and in Which the ratio is again multiplied on account of the leverage oi the shipper lever.

Further objects and advantages of the invention will appear hereinafter.

Reference is to he had to the accompanying;- drawing,r in whicha Figure 1 ia a central sectional view through a driving shaft and gearing therefor Showing a preferred en'ihmliment oi the invention. Fig. 2 is a detail end view ot the clutch. `Fig. il is a side elevation ot Fig. E2 partly broken away to show interior construction. Fig. it iS a sectional view on the line 1w-"1- of Fig. 2, and Fig. 5 a detail enlarged sectional view on the line '5w-5 of Fig. Q.

ln .the form ot `the invention Shown in the drawings, a shaft 'l0 which is driven in any desired way, is shown as provided at; its end with. a hevel l(rear 1l which meshes with and drives gears l2 and 13 upon opposite sides thereof. 'lhese gears or wheels are mounted to run .loose on a Shaft l0. Fitting in sockets or groovesA in the inner open faces of these gears are l'rietion clutch rims S20. Secured en the shaft 10 is a sleeve 17.

IC; fh friction clutch rim 20 consists oi. a huh 2l projecting from which ia a circular rh 23, the end oi whieh is cut oli so as to he capable of radial movement so that it constitutes a split clutch ring, one end oi which is rigid on the huh and the other is tree. This split ring is adapted te hee);n panded against the inner eurtaee ot the socket. in which 'it iS lo 'ated to connect the A'ear with the huh.

Fitting; into segmental depressions or sockets in the fixed part et' the huh and the :t'ree end ot the circular rih respectively are two segmental studs or pins Q-lwO-t. The sides of these pins are slahhed where they normally bear on each other, so that they constitute eccentries. Projecting from each 'of these pins is an operating arm 25, eaeh ot which carries a` hearingl head 20 at. ita-s free end.` lthese arms extend inwardly so that the heads 20 are diametrieally opposite. lhese heads are on Screw@` which ean he adjusted hy nuts 3 'thug the clutch rim Q0 ia separated `lrem the arme h v a circunr t'erential slot adjacent to the transverse slot that. separates the ends of the clnteh ring 20.

Sliding.;` on the driven shaft .l0 and keyed thereto is ay huh 27, eaeh end Ltl' ot which is tapered and tits in between the hearing' heads 20 ot' the respective clutches. lli/Then the sliding;` huh Q7 is moved in either direction one of the tapered ends t7 ot the same Vlforccs the arms of one of the clutches ontY wardly, and thereby expands the clutch rirng Q3 to 'engage the socket in the rear 1;) or lll, so that the shat't l0 will he locked to,

'and will turn with, the bevel gear l2 or 13.

Each pin *El turns in its soolret and engages the other` pin Q4 to assist of the ring. The slidi.. 5 cnt in the saine, and engl Sg the same is e yoke 3? which can be aruatecl by a handle,

so that either ti in ol' gearing' can be used as desired if the operator V,by simple man nipulatlon et sai-:l handle. 1.0 lt is an advantageous construction to use two arms 2.5- ingrtapered info fr', by 'points of said arms dinnetrieally `the expanding 'oree ,is equal f tween the all l' n-f cramp or sin) on the The two lint; simultaneously sgool thereby tween the snoei and slidesu The lingers a' i' ing manner to eran adgustment or the a i s-MHT tim 10m.' t HLA 111,5 ino mdr. opposeo. icled suring the spool to Without any side pri By means of the the device is exeeeei venient to operate. While lf illustrated particular` eniboi'liment of am aware made therein liv any person art, nel that the iii-sent' i i `igearin eonstru and that many niodiieatlons van other t'ian bevel out deoarting from the scope of as exgressed in the claims.

@do not Trish. to he limited to the y" details andern.' ations illustrated1 but aim isty En a lotion Clutch., the combinatie" A a split elnteh ring having opposite adjae' it sockets in ends thereof, non-eirenler ro a le pi'iis'f said soelrets7 and elnte lng arms extending inner i sai(l n 2. 'in a i'rietien clutch, the combina a sa lit elnteh ring, transverse me il.

cated at the ends of J ha elntoh rn fiat surfaces in' eiintaet with each other and. adapted when turned, upon tl axes to seperate the free ends of said clutch ring, arms on said members extending inwardly therefrom, and longitudinally movable means for pushing said arms' out at their inner ends toftnrn said membersandsen arate the free ends of the clutch ring.

3. ln a frietion'elutch,1the combination of e shaft= a hnb'ixel thereon, a split ring hai/- ing one end rigiilon the hub and the other free, arms supported by and projecting in- Wardly from the ends of the snlit ring, and means movable axially for fngaging said in the expansion heb 3T has a groove i to Cooperate with the slid-l arms and forcing them apart to expandthe split ring.

fin a friction clutch, the combination of a shaft, a hnb iixed thereon, a split ring eon` neeted. with Said hub at one end'and free :it the other, the two ends of said ring having segmental depressions, a member rotatably mounted on the shaft and having a .soelget in which said ring is located, two segmental studsl fitting in said depressions, a pair of arms each rigidly mounted on said studs, arms projecting; inwardly toward the center of the shaft Jfrom said sinds, but div-erging .from eaeh other, and :in axially movable member' for engaging said arms at diametrieally opposite points anil forcing them apart to expand the split ring'.

fasen article of manufacture,a friotien clutch norms-frisinfY a split ring having one end and the other tree, each end having e segmental depression therein, a segmental 'pin Fitting in eaeh ot said depressions, said pins being` in e tact normally and being slabbed ofi where they are in Contact, a pair diiferging from eaeh other, and hearing arms at diametrieally opposite by when said bearing heads are t the split ring will be expanded,

Wheel turning loosely thereon, of `a friction device scoured to said shaft and comprising Within said Wheel and split finsif'ersely. one end of the ring having a eemental depressionz a segmental stud tefl i'isaid depression, means on the other he ring for engaging said stall, and

seat and moving said means on A i i e of the ring against the stud, whereby said means and stud ee'perate with other for forcing the ends of the ring e., huls set forth, o' an inner 4nested Within saidrfheel consisting split trensff ersely7 two pisfoted opens liavlng'eceentiics arranged to each other and the ring sections ey said transverse splitting, and a sliding member adapted to Contact with the inner en/ds or" said operating arms foi-turn'- ing-said'eeeentries in opposite directions.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing Witnesses. i ALBERT E. NEW'TGN.

" Witnesses ALBERT E. "FAX, t

C, Formeel* WessoN.

el ai* projecting inwardly from said pins' 'for simultaneously oscillating;` said.

he ve-fnnbination with -an outer Wheel 

